Audi A3  Controls and displays  Instruments and warning/indicator lamps  Warning and indicator lamps
The indicator lamp monitors the safety systems and the pedestrian protection system.
Safety system
If the indicator lamp lights up or flashes, there is a malfunction in one of the safety systems.
Drive to a qualified workshop without delay and have the fault rectified.
Pedestrian protection system
If the indicator lamp  lights up or flashes and the bonnet is in a raised position, the pedestrian protection system has been triggered. Please refer to Link.
Have the safety systems examined without delay; otherwise they may fail to trigger in an accident – this could result in serious or possibly fatal injury.

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